NEW
Font size
WorksheetsQuiz 2 (Wastewater Characteristics)
Total questions: 14
Worksheet time: 9mins
Which one is the characteristic of wastewater?
Does not contain pathogenic micro-organisms
Safe to health
Used water from residential, commercial, and industrial areas
Free from breeding sites for insects, pests and micro organism
Which of the following wastewater flowrates is important in the design facilities involving retention time?
Minimum hourly flow
Peak hourly flow
Average daily flow
Maximum daily flow
Which of the following sources is NOT categorized as domestic wastewater?
Manufacturing factories
Residential houses
Schools
Toilet and bathroom
Which of the following is NOT considered as physical characteristic of wastewater?
Temperature
Organic compound
Odor
Solids
Which ONE of the following is property of organic compound?
Non combustible
Low molecular weight
High melting and boiling points
Less soluble in water
What is the effect of excessive organic compounds in water?
Maintain the population of aquatic life
Increase the level of dissolved oxygen (DO)
Damage the ecosystem
Not a cause to health hazard
'Easily degraded by microorganisms' is a characteristic of?
Non-biodegradable organics
Biodegradable organics
Inorganic compunds
Which of the following is NOT including in the measurement of organic compounds in water?
Chemical oxygen demand
Biochemical oxygen demand
Biological oxygen demand
pH
Definition of BOD
Quantity of chemical utilized by micro-organisms to biologically degrade the organic matter in the water under anaerobic condition
Quantity of oxygen utilized by micro-organisms to biologically degrade the organic matter in the water under aerobic condition
In the biological process, how much new cells will be produced from the organic matter?
1/4
2/3
1/2
1/5
Definition of COD
The quantity of equivalent oxygen needed to chemically oxidize the organic compound in sample, converted to carbon dioxide and water.
The quantity of equivalent chemical needed to biologically oxidize the organic compound in sample, converted to nitrogen and water.
Which one is the TYPICAL condition for COD and BOD in water?
COD/BOD5 ≈ 2 to 3
COD > BOD
COD >> BOD5
Which are from the following inorganic compounds are NOT coming from natural sources?
Alkalinity
Nitrogen and Phosphorus
Chlorides
Sulphur
Which are the wastewater quality standards used in Malaysia?
Regulations in Environmental Quality (Sewage), 2009
Environmental Quality Act, 1974
Standards for sewage treatment plant effluent (Standard A and Standard B
All the above answers.
